sub-process: correct path to API docs in a comment

Signed-off-by: Christian Couder <[email protected]>
Acked-by: Ben Peart <[email protected]>
Reviewed-by: Jonathan Nieder <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: chriscool

sub-process.h

@@ -7,7 +7,7 @@
 
 /*
  * Generic implementation of background process infrastructure.
- * See Documentation/technical/api-background-process.txt.
+ * See: Documentation/technical/api-sub-process.txt
  */
 
  /* data structures */